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  • OV691EA/OV691EP (TVT691/VTX691)Four-Cycle Twin Cylinder Engine Vertical Crankshaft Air-Cooled

    Table of ContentsIMPORTANT NOTICE! Safety Definitions.........................................ii

    I. General Safety Precautions ............................................................. 1II. How to Get Service .......................................................................... 3

    III. Oil and Fuel Specifications............................................................... 4IV. Before Starting Your Engine ............................................................. 4V. Starting Your Engine......................................................................... 6

    VI. Stopping Your Engine and Short-Term Storage................................ 8VII. Maintenance..................................................................................... 8VIII. Transporting Your Engine............................................................... 12IX. Storing Your Engine........................................................................ 12X. Preventing Forest, Brush and Grass Fires..................................... 14

    XI. Maintenance Intervals .................................................................... 14California & US EPA Emission Control Warranty Statement .......... 20Emission Control System Warranty................................................ 21

    XII. Warranty Information...................................................................... 22

    181-1273-14

    Register Your TecumsehPower EngineMaintenance TipsOn-Line StoreLocate your nearest TecumsehPower Servicing Dealer

    Visit our web site at www.TecumsehPower.com

    LOG ON!

    (English) 7/01/08

  • IMPORTANT NOTICE!

    Safety DefinitionsStatements in this manual preceded by the following words and graphics are of special significance:

    Or

    WARNING indicates a potentially hazardous situation which if NOT avoided, could result in death or serious injury.

    Indicates a potentially hazardous situation which, if NOT avoided, may result in minor or moderate injury.

    Indicates a potential situation which, if NOT avoided, could result in equipment or property damage.

    NOTERefers to important information and is placed in italic type.

    It is recommended that you take special notice of all items discussed on the next two pages and wear the appropriate safety equipment.

    Before operating this engine it is your responsibility to read this Operators Manual. Follow these basic rules for your personal safety:

    Keep this manual handy at all times for future reference.

    Read it carefully and familiarize yourself with operating, maintenance, components and safety instructions.

    Notice Regarding Emissions NOTE

    Engines which are certified to comply with California and U.S. EPA emission regulations for SORE (Small Off Road Equipment), are certified to operate on regular unleaded gasoline, and may include the following emission control systems: (EM) Engine Modification and (TWC) Three-way Catalyst (if so equipped).

    TecumsehPower Contact InformationFor engine adjustments, repairs or warranty service NOT covered in this manual, contact your nearest Authorized TecumsehPower Servicing Dealer. Find them on our website at www.TecumsehPower.com or call TecumsehPower Company at 1-800-558-5402 for additional information.

    ! WARNING

    WARNING

    CAUTION

    CAUTION

    The trademarks TECUMSEH and the DESIGN (Native American Head logo) are registered trademarks of Tecumseh Products Company and are used by TecumsehPower Company under license from Tecumseh Products Company. TecumsehPower Company is no longer owned by Tecumseh Products Company nor is it associated or affiliated in any way with Tecumseh Products Company.

    Copyright 2006, 2008

    TecumsehPower Company

    All Rights Reserved

    Page ii Four-Cycle Twin Cylinder Engine Vertical Crankshaft Air-Cooled 181-1273-14

  • I. General Safety Precautions

    ! WARNING

    A. Avoid Carbon Monoxide PoisoningAll engine exhaust contains carbon monoxide, a deadly gas. Breathing carbon monoxide can cause headaches, dizziness, drowsiness, nausea, confusion and eventually death.Carbon monoxide is a colorless, odorless, tasteless gas which may be present even if you DO NOT see or smell any engine exhaust. Deadly levels of carbon monoxide can collect rapidly and you can quickly be overcome and unable to save yourself. Also, deadly levels of carbon monoxide can linger for hours or days in enclosed or poorly-ventilated areas. If you experience any symptoms of carbon monoxide poisoning, leave the area immediately, get fresh air, and SEEK MEDICAL TREATMENT.To prevent serious injury or death from carbon monoxide:

    NEVER run engine indoors. Even if you try to ventilate engine exhaust with fans or open windows and doors, carbon monoxide can rapidly reach dangerous levels.

    NEVER run engine in poorly-ventilated or partially enclosed areas such as barns, garages, basements, carports, under dwellings, or in pits.

    NEVER run engine outdoors where engine exhaust can be drawn into a building through openings such as windows and doors.

    B. Avoid Gasoline FiresGasoline (fuel) vapors are highly flammable and can explode. Fuel vapors can spread and be ignited by a spark or flame many feet away from engine. To prevent injury or death from fuel fires, follow these instructions:

    NEVER store engine with fuel in fuel tank inside a building with potential sources of ignition such as hot water and space heaters, clothes dryers, electric motors, etc.

    NEVER remove fuel fill cap or add fuel when engine is running.

    NEVER start or operate the engine with the fuel fill cap removed.

    Allow engine to cool before refueling.

    NEVER fill fuel tank indoors. Fill fuel tank outdoors in a well-ventilated area.

    DO NOT smoke while refueling tank. Use only an approved red GASOLINE container

    to store and dispense fuel. TecumsehPower Company recommends purchasing gasoline in containers with a capacity of 2.5 gallons or less. Small containers are easier to handle and help eliminate spillage during refueling.

    DO NOT pour fuel from engine or siphon fuel by mouth. To empty the fuel tank, see "I. Draining Fuel" instructions on page 13.

    C. Adult Supervision of Operation, Refueling and Maintenance

    The manufacturer of the equipment may provide information about who is allowed to use this engine (see equipment manufacturers manual). NOT everyone who is allowed to use this engine is capable of safely and responsibly operating, maintaining and/or fueling it. TecumsehPower Company recommends the following:

    An adult should fuel this engine. NEVER allow children to refuel this engine. See "C. Filling Fuel Tank" instructions on page 5.

    An adult should perform maintenance on this engine. See "VII. Maintenance" instructions on page 8. Only allow children to perform mainte-nance if an adult has determined they are experienced and capable of such operation.

    An adult should start the engine. See "G. Avoid Accidental Starts" instructions on page 2. Only allow children to start the engine if an adult has determined they are experienced and capable of such operation.

    To avoid unsupervised operation of the engine, especially by children, NEVER leave it unattended when it is running. Remove ignition key, if equipped.

    D. Stay Away from Rotating PartsNEVER operate the engine with an unguarded engine shaft or flywheel. See Figure 1 on page 2.The equipment manufacturer may attach a sprocket and chain or pulley and belt to the engine shaft. If these parts are NOT properly guarded, or if you are NOT sure whether they are properly guarded, DO NOT use your engine; contact the equipment manufacturer. Hands, feet, hair, jewelry, clothing, etc.,can become entangled in rotating parts, leading to serious injury or death. To avoid serious injury or death, be sure the flywheel guard is in place. See Figure 1 on page 2.

    Read equipment manufacturers manual and thismaterial thoroughly before using this engine. Failure todo so can result in serious injury or death. Consult yourlocal Authorized TecumsehPower Servicing Dealer, call1-800-558-5402, or go to www.TecumsehPower.com foradditional information.

    181-1273-14 Four-Cycle Twin Cylinder Engine Vertical Crankshaft Air-Cooled Page 1

  • E. DO NOT Modify EngineTo avoid serious injury or death, DO NOT modify engine in any way. Tampering with the governor setting can lead to a runaway engine and cause it to operate at unsafe speeds. NEVER tamper with factory setting of engine governor.

    ! WARNING

    F. Avoid Burns and Fire from Hot SurfacesThe muffler and other engine parts become extremely hot during operation and remain hot after the engine has stopped.

    To avoid severe burns on contact, STAY AWAY from hot areas of engine. DO NOT operate the engine without the muffler guard in place, if equipped.

    To reduce the risk of fire keep all materials that can burn, including grass and leaves, away from muffler and rest of engine. DO NOT operate, idle or park engine powered equipment in long dry grass or other dry ground cover.

    G. Avoid Accidental Starts

    NOTEThe Twin Cylinder Engines have two spark plug connections.

    To prevent accidental starting when working on equipment always:

    Carefully disconnect spark plug wire and keep it away from spark plug. See Figures 2 and 3.

    Keep the disconnected spark plug wire securely away from metal parts where arcing could occur.

    Carefully attach the spark plug wire to the grounding post, if provided.

    Disconnect battery at negative terminal first, if engine is equipped with a DC electric starter.

    Turn all engine switches to OFF

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